Molecular Geometry/IMF
Chemical Reactions
Stoichiometry
States of Matter
Gas Laws
100
What is the weakest intermolecular force?
Dipole-Dipole, London Dispersion, or Hydrogen bonding
London dispersion
100
What is one piece of evidence that a chemical reaction has occurred?
Bubbles, heat produced, light produced, precipitate (solid formed), odor, color change...
100
The mass of one mole of a substance is equal to the _________ ________ of that substance (from the periodic table).
molar mass
100
Which state of matter has a definite volume and a definite shape?
Solid
100
Convert 56 degrees Celsius to Kelvin.
329 K
200
What is the molecular geometry of CO2?
Linear
200
In the following formula, how many oxygen atoms are present? Ca(NO3)2
6
200
What is the molar mass of Cu(NO3)2?
187.56 g/mol
200
Which state of matter has the particles with the most amount of energy?
Gas
200
Convert 80 psi to atmospheres (atm)
5.44 atm
300
What is the molecular geometry of water a molecule?
Bent
300
Balance the following equation:
__Fe + __O2 --> __Fe3O4
3Fe + 2O2 --> 1Fe3O4
300
A student produces 25g of a compound, though the reaction should theoretically produce 81g. What is the percent yield?
30.86%
300
What is the boiling point of this substance based on this heating curve?
134
300
A gas occupies 12.3 L at a pressure of 40.0 mmHg. What is the volume when the pressure is increased to 60.0 mmHg?
8.2 L
400
What is a polar molecule?
A molecule with unequal sharing of electrons. These molecules experience dipole-dipole forces.
400
Balance AND classify the following reaction:
__Al2O3 --> __Al + __O2
2Al2O3 --> 4Al + 3O2
Decomposition
400
2H2 + O2 --> 2H2O
How many moles of H2O can be produced from 6 moles of O2?
12 moles of water
400
Which region of this phase diagram represents a gas?
C
400
A balloon is filled with 2.50 L of gas at a room temperature of 22.0 C. If the balloon is placed in a warmer room where the temperature is 71.0 C, what is the new volume of the balloon?
2.92 L
500
The boiling point of water is 100 degrees Celsius, while the boiling point of acetone is 56 degrees Celsius. Which has weaker intermolecular forces?
Acetone
500
Write the following balanced chemical equation:
Lithium reacts with oxygen to produce lithium oxide.
4Li + O2 --> 2Li2O
500
2H2 + O2 --> 2H2O
How many grams of H2 are needed to produce 15 grams of water?
1.68 grams of hydrogen
500
What is the name of the phase change going from a gas to a solid?
Deposition
500
A 10.0 L tank contains 0.10 moles of gas at 500 K. What is the pressure in atm?
0.41 atm